Alert archive / Michigan / Frost Advisories in 2021
Frost Advisory 8, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this frost advisory at May 28, 2021, 10:48 AM EDT for 10 counties in Michigan. It took effect at May 29, 2021, 12:00 AM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 28, 2021, 10:48 AM EDT (14:48 UTC)
- In effect from
- May 29, 2021, 12:00 AM EDT
- Expired
- May 29, 2021, 7:54 AM EDT
- In force
- 8 hr
- Issued by
- NWS Grand Rapids, MI
Counties Clare County, MI, Gratiot County, MI, Isabella County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 91 km from the middle of the area, began a volume at 14:48 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 2.8 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 713 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
397 WWUS73 KGRR 281448 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 1048 AM EDT Fri May 28 2021 MIZ037>040-043>046-051-052-282300- /O.NEW.KGRR.FR.Y.0008.210529T0400Z-210529T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Montcalm- Gratiot- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, Mount Pleasant, Greenville, and Alma 1048 AM EDT Fri May 28 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SATURDAY... * WHAT...Temperatures in the low to mid 30s may result in frost formation. * WHERE...Portions of central and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Saturday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
4 follow-up statements
176 WWUS73 KGRR 282001 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 401 PM EDT Fri May 28 2021 MIZ037>040-043>046-051-052-290415- /O.CON.KGRR.FR.Y.0008.210529T0400Z-210529T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Montcalm- Gratiot- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, Mount Pleasant, Greenville, and Alma 401 PM EDT Fri May 28 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SATURDAY... * WHAT...Temperatures in the low to mid 30s may result in frost formation. * WHERE...Portions of central and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Saturday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
858 WWUS73 KGRR 290136 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 936 PM EDT Fri May 28 2021 MIZ037>040-043>046-051-052-290945- /O.CON.KGRR.FR.Y.0008.210529T0400Z-210529T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Montcalm- Gratiot- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, Mount Pleasant, Greenville, and Alma 936 PM EDT Fri May 28 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central and west central Michigan. * WHEN...Until 8 AM EDT Saturday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
529 WWUS73 KGRR 290754 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 354 AM EDT Sat May 29 2021 MIZ037>040-043>046-051-052-291200- /O.CON.KGRR.FR.Y.0008.000000T0000Z-210529T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Montcalm- Gratiot- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, Mount Pleasant, Greenville, and Alma 354 AM EDT Sat May 29 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central and west central Michigan. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
190 WWUS73 KGRR 291154 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 754 AM EDT Sat May 29 2021 MIZ037>040-043>046-051-052-291300- /O.CAN.KGRR.FR.Y.0008.000000T0000Z-210529T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Montcalm- Gratiot- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, Mount Pleasant, Greenville, and Alma 754 AM EDT Sat May 29 2021 ...FROST ADVISORY IS CANCELLED... Temperatures will warm up quickly this morning. $$ For more information from the National Weather Service visit https://weather.gov/grr
Nearby
Frost Advisories in Michigan, 2021Every frost advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.